Re: [cp-patches] Serialization UIDs patch

[Andrew John Hughes]

On Mon, 2004-09-06 at 06:50, Michael Koch wrote:
> On Sunday 05 September 2004 12:50, Andrew John Hughes wrote:
> > On Sun, 2004-09-05 at 07:00, Michael Koch wrote:
> > > On Sunday 05 September 2004 03:32, Andrew John Hughes wrote:
> > > > A quick patch to sort out some of the serial version UIDs,
> > > > as well as correcting a couple of AccessibleRoles I spotted
> > > > that shouldn't be null.
> > >
> > > SerialVersionUIDs dont make much sense as Tom Tromey pointed to
> > > me lately. Serialization is not supported with Swing anyway and
> > > SUN changes the SerialVersionUIDs with every release, even in the
> > > 1.4.2 patch series. So it would be hard to follow them.
> > >
> > >
> > > Michael
> >
> > I agree with you as regards the Swing GUI components -- Sun states
> > that serialization of these is not dependable between versions, and
> > thus they are not making any effort to keep steady UIDs.  However,
> > other classes are actively maintained to be backwards-compatible as
> > regards serialization (java.util.Calendar is one).  Where classes
> > are expected to be compatible other major versions of Sun's JDK
> > (say 1.3 and 1.4), we should aim to be compatible too, IMO, so
> > things like RMI will still work.  As Japi spots these differences,
> > its not too difficult to track these things, and fix them as and
> > when there is time (they are really a major priority, but useful to
> > have nonetheless).  If it is the case that we shouldn't be handling
> > these, then this should really be noted somewhere in the on-line
> > material.
> 
> 
> As I said: "Serialization is not supported with Swing". 
> java.util.Calendar is not Swing. We always aimed to be compatible for 
> the classes that really support serialization.
> 
> I find it just annoying to change the serialVersionUIDs with every SUN 
> bugfix release.
> 
> 
> Michael

Sorry, I misread your comment as meaning all serial version UIDs, with
Swing as an example of why.  The patch does include the odd patch for
Swing components, but also for a classes that have stable UIDs and/or
that are supported by Sun (I believe this does include some classes that
are in the Swing package, such as the models -- these are wrappers
around things like Lists or integers, rather than visible components,
and are more likely to be used in general serialization and RMI).  I
agree with what you're saying as regards tracking every revision to a
point release, and I will re-submit without the unsupported
serialization patches. 
-- 
Andrew :-)
 
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